Focallength estimation

It should be noted that as the field of view widens, the resulting image may exhibit more distortion. In certain cases, distortion can be mitigated using dewarping techniques. However, it is advisable to select a lens optimized for the intended field of view to minimize distortion in the original image.

By measuring the object distance (u) and the corresponding image distance (v), you can substitute these values into the lens formula and find the focal length (f). It’s important to know that the focal length of photographic lenses is usually expressed in millimeters (mm).

Focallength to angle of viewcalculator

The focusing power of a lens and its focal length is inversely proportional. A lens with a longer focal length, when compared to a lens with a shorter focal length, will result in a smaller field of view and increased magnification of objects. The field of view can be expressed as a dimension in millimeters or degrees. When the sensor size (H), desired field of view (FOV), and working distance (WD) are known, it is possible to estimate the required focal length (f) of the lens using the following equation.

You can save development effort and reduce product costs with an optical module. Optical modules include a high-performance image sensor module paired with an ideally matched lens and lens mount, which provides easy compatibility with your choice of image processing board via FRAMOS’s standardized PixelMate™ interface.

The angular field of view (AFOV), which represents the extent of the observable scene in degrees, can be derived from the field of view (FOV) and working distance (WD).

Hyperfocal distancecalculator

Lens calculator

Determine the best optical fit for your project based on the required sensor size and image circle, desired operating range and field of view (FOV), and lens type requirements specific to your application.

Keep in mind that this formula assumes thin lenses and a paraxial approximation, which are valid for many practical situations. However, for complex optical systems or special lenses, additional considerations and corrections may be required for accurate calculations.

Visit our optical products pages for a full list of C-Mount lenses, M12/M10/M8/M6 screw mount lenses, optical filters, and optics accessories including custom designed lens mounts, extension tubes and adapters.

Red Flock Adhesive Size: 4 Ounce Sold Each Flock adhesive is specially tested and selected to hold flock securely. Apply to surface before flocking. Flock and adhesive are offered in a variety of colors. View: Flock Instructions:

Equivalentfocallengthcalculator

By utilizing this focal length calculator tool, you can determine the focal length needed to capture an image of an object at a specified distance. This calculation allows you to ensure that desired field of view will be captured by your optical module.